Bug 72062
| Summary: | [skia] drawConvexPolygon without antialiasing gives different results vs. CG | ||
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| Product: | WebKit | Reporter: | Ben Wells <benwells> |
| Component: | Platform | Assignee: | Nobody <webkit-unassigned> |
| Status: | RESOLVED WONTFIX | ||
| Severity: | Normal | CC: | jamesr, kbr, mikelawther, reed, schenney, senorblanco |
| Priority: | P2 | ||
| Version: | 528+ (Nightly build) | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Bug Depends on: | |||
| Bug Blocks: | 66821, 70471 | ||
Ben Wells
When AA is off, CG and skia draw differently: if a pixel is not fully on or off, CG draws it on, while skia sometimes draws it on and sometimes doesn't (depending on which side - left or right - of the pixel is on and which is off).
This will also happen when filling paths if AA is forced off, but I don't think that ever happens. See bug 66821 and bug 70471 for more info.
Currently this has only caused a couple of minor bugs, one of which can be fixed in a different but inferior way. If drawConvexPolygon is used more or filling paths is used without AA, this might cause future pain.
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